 $(function () {
     $(".btn_cancel").click(function () {
        var id = $(".this_id").val();
        var picurl = $('.picurl').val();
        $.ajax({
            type: "post",
            url: btnCancel,
            data: {picurl: picurl, id: id},
            dataType: "json",
            success: function (data) {
                history.back(-1);
            }
        });
     })
 });